+1 on the chemical-induced lucid dreams.

I'm a regular smokeless tobacco user, and I find that it will induce lucid dreams most of the time. It is a nasty, disgusting habit, I know.

If I fall asleep with a pouch in, I will undoubtedly have a lucid dream that night. I try not to do this for multiple reasons, but that is one benefit that my gross habit has.

On weekends/etc, I see nothing wrong with trying to induce a lucid dream with a little bit of coffee. Not like it is anywhere near as harmful as my habit I do understand your desire to be able to control it more though.